To begin with put strawberry, sugar and a pinch of salt in a blender. Blend them to puree and set aside.

Heat 1 tsp butter in a pan. Add strawberry puree. Keep stirring and cook it over a medium flame for 5 minutes or until thickened and sticky. Turn off the flame and let the jam to cool down.

Take the bread slices, trim the edges and butter them evenly.

Spread the strawberry jam evenly over two bread slices and press them together. Repeat the process of getting similar sandwich of other two bread slices.

Now spread rest of the strawberry jam over both the sandwiches and press them together.

Thus ready is the delicious and sweetened strawberry jam sandwich.

Cut it diagonally and serve on a plate.